function TowerType()
{
  var resourceName;
  var damage;
  var damageArea;
  var maxMisiles;
  var cost;
  var coolDown;
}

TowerType.prototype.Draw = function(root)
{
  root.LoadResource(this.resourceName);
}

TowerType.prototype.toString = function()
{
  return "[TowerType : " + this.resourceName + "]";
}